The PEEP (Photo-Electronic Erosion Pin) system allows
monitoring of erosion and deposition automatically. The timing,
magnitude and frequency of the specific erosion/deposition events
at the site can be clearly identified. Conventional, manual
methods like erosion pins and resurvey techniques can only reveal
net change to a site since the previous field visit. They cannot
therefore reveal the 'true' temporal distribution of erosional and
depositional activity. The high-resolution information from PEEP
systems, however, is incredibly valuable in process and management
studies for erosion.
PEEP Sensor Applications
- Automatic monitoring of erosion and deposition events in
sediments and soils
- Near-continuous recording of the dynamics of
geomorphological change
- River processes, waterway engineering, soil erosion, coastal
zone monitoring
- Environmental management (e.g. soil conservation and bank
stabilization work)
- Applicable to:
- - River Banks
- - Drainage/Irrigation Channels
- - Soil Erosion Plots
- - Hillslopes
click to enlarge
A PEEP sensor is a narrow transparent acrylic tube containing
an array of photosensitive cells. PEEP sensors are installed and
reset in a sediment surface much like conventional erosion pins
(see diagrams and photo below). PEEP sensors output a millivolt
signal proportional to the length of PEEP tube exposed to light.
Erosion, therefore, increases voltage outputs, while deposition
decreases outputs. Connect PEEP's to your datalogger (e.g. 15-min
scans) to reveal the magnitude, timing and frequency of erosional
and depositional events much more clearly than with conventional
methods alone. Even nocturnal events are usually detected just a
few hours later!
Two models are available:
- PEEP 110 is 50 cm long with active length of 11 cm and is
suitable for moderately active sites.
- PEEP 200 is 66 cm long, has an active length of 20 cm, and
is suitable for more dynamic sites. PEEP 200 has two thermistors
for automated temperature monitoring at the sediment surface and
at 70 mm depth.
- Also available are installation tools such as 16 mm soil
augers to make installation holes and Wireman's tape to help
thread PEEP cables through installation holes.
407-006 PEEP 110, including 10 m of screened 6-core cable 6 lbs.
407-007 PEEP 200, including 10 m of screened 15-core cable 12 lbs.
407-008 Cable for
PEEP 110 models (6-core): additional lengths
407-009 Cable for
PEEP 200 models(15-core): additional lengths
407-010 Regular
installation auger (110 cm long) 8 lbs.
407-011 Long
installation auger (160 cm long) 10 lbs.
407-012 Wireman's
Tape, 20 m long, round section, nylon 2 lbs.
